Part
10 – More on the Arm Jigsaw
Here
is the work done today, which was preparing the arms before shaping.
Critical work, and the day went well. This was mainly due to working
methodically. Looking back it all seemed so logical and
straightforward, but it didn't feel this way beforehand.
The
first task was to bandsaw all the blocks of wood into shape, having
outlined the parts with the templates.
Lining
up the arm parts for two chairs, three for each ...
At
first I thought I would clamp them together and balance the lot on
top of each chair ... no, that would be silly! The chairs
were turned upside down on the arms ...
This
revealed that the spread of the arms was a little too wide. The arm
supports need to be centred on the arm rests ...
Before
adjusting this, the next stage needed to be to cut the arm supports
to length. To do this, first the template for the arm elevation was
positioned ...
...
and then a template was made to position this ...
This
allowed all the arms supports to be marked on both sides ..
..
and marked with blue tape ...
The
excess is sawn away ...
The
template also enables the accuracy of the saw cuts to be checked, and
for square. This will need to be fine tuned later, but good for now
...
The
underside of the arms are marked so the positions on each will be the
same, and the overhang at the rear was roughly calculated. Again,
this will be adjusted after the arms parts are joined.
Now the
top rail can be positioned for sizing ..
It
is marked for sawing ...
Aligned
on the slider ...
All
the ends of the arms are squared this way, however the saw has a
maximum cut height of 75mm and these parts are 90mm. This leaves 15mm
to saw away with a hand saw, and then clean up with a block plane.
This clean up is important as it is also jointing for the parts to
fit together gap-free ...
The
arm parts are ready to fit together ...
And
all done for the day ...
Regards
from Perth
Derek
March 2024